The jet was the problem. It was running rich and chugging.
The jet will work installed either way but the correct way to install is from the top. That way it can not fall out ans sit in the bottom of the bowl like it was doing.
You have to use a drill bit or something to slide it in to make sure it is not sideways and push it into the hole so o-ring seals it.

I find them all the time in from the bottom and I believe some even came from factory this way.

It can only install one way.... but yes it wasnt quite sitting in the bottom of the carb but it was way loose... hopefully when I get the new head gasket I can just put it all back together and its solved... and yes I hate nikki carbs, worst design of all time.

It can only install one way.... but yes it wasnt quite sitting in the bottom of the carb but it was way loose... hopefully when I get the new head gasket I can just put it all back together and its solved... and yes I hate nikki carbs, worst design of all time.

No, it can certainly be installed two ways . You can push it in from the bottom which is the wrong way in my opinion and the way that allows it to possibly fall out or you can turn it over and push it in from the top sliding it down the hole in the middle of the plastic that the brass tube will fit in when you slide the carburetor bowl onto the top of the carb. This way it's being held in place and gravity is also holding it down. Either way it's still fits in the same hole with the O-ring stealing around the outside circumference in the same spot but it can never fall out when you put it in from the top and create the condition you had which was extremely rich running.

Here is a screenshot from the website mentioned a couple of posts above that mentions how to install the seat the best way from the top. So often when I pull them apart I find a seat pressed in from the bottom. I believe many even came from the factory this way but it's not the best way.

No, it can certainly be installed two ways . You can push it in from the bottom which is the wrong way in my opinion and the way that allows it to possibly fall out or you can turn it over and push it in from the top sliding it down the hole in the middle of the plastic that the brass tube will fit in when you slide the carburetor bowl onto the top of the carb. This way it's being held in place and gravity is also holding it down. Either way it's still fits in the same hole with the O-ring stealing around the outside circumference in the same spot but it can never fall out when you put it in from the top and create the condition you had which was extremely rich running.

Whatever I dont follow, it is 100% impossible to fit the part that is bigger on one side than the other into the same hole, we must be talking about different parts.

I don't mean that you flip the jet over and try to put the larger brass part into the hole, you are correct that would not fit. I mean instead of sticking a smaller part with the O-ring on it up into the hole from the bottom dot-dot-dot you hold it in your hand with the O-ring and the small part pointing down and you drop it in from the top down the hollow plastic Center the plastic body. Then you reach in with a drill bit and push it through so the O-ring seals. This way you're putting it in from the top and not the bottom and it can never fall out. This is what a screenshot I posted says that you slip it in from the top.

Perhaps a bit of explanation. The fuel is limited in flow through by the diameter of the jet. It does not care in which direction it flows through the jet. So, the aperture is the same no matter which way the jet faces. Dropping it in from the top of the plastic assembly performs the same 'limiting' function of the jet as pushing it in from the bottom.
I don't know factory assembly instructions, but it should make no difference in operation whether it is atop or below the plastic mount. As long as it seals and meters fuel flow, it should work.
It is rather unusual to have so much clearance 'up there' that a jet can be fitted, and is not 'normal' assembly positioning, as all other similar jets are stuffed in from the bottom. But, most if not all are threaded, while this bozo is not, and relies on the O-ring to hold it in place unless installed from above. New engineers trying out their Collitch Degreze.
tom

Register Now

In order to be able to post messages on the MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.